Feature/add people tool

1)Added logic for editing a section. Provided the helper method to invoke the API - needs to plugin the UI logic to invoke this. 
2)Unit tests to follow. This is the next task I have on my list. 
It's a minor point, but this 'return None' is inconstant with the bare 'return' in the earlier method. I personally prefer to be explicit in what we're returning, but as with all style we should probably be consistent within the file.